EF 6 Code-First Many to Many relationship with same entity on non-primary key

Entity Framework Code-First - Define the Non-clustered key for this EntityType

As part of your code first configuration, it is still not yet able to generate non-clustered primary key fields....See the Entity Framework work item below for a solution using ...first-code migrations... (as well as the reasoning behind no direct code first support) if you are using ...migrations... or are in a situation where you are able to:...h...

EF6 Code First - Configure One-to-One relationship with unmatched foreign keys

If the...Document... is the teacher and...DocType... is the dependent, you must choose between...turn on this setup...Document...HasRequired(d => d.DocType).WithRequiredPrincipal(dt => dt.Document); ...Or with this setting on...DocType...HasRequired(dt => dt.Document).WithRequiredDependent(d => d.DocType); ...and take away...TypeId... / ...ProsDoc...

EF Code-First One-to-one relationship: Multiplicity is not valid in Role * in relationship

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primary key constraint updating many-to-many self referential table in entity framework code-first

Identified the issue....I was eager loading the children using an include line when the entity was first loaded....I did not eager load the children when I modified the object or when I retrieved it from the database again. As a result, the changes and additions were becoming unclear. Upon included the include during the upload, scenario #2 above w...

EF 6 - Code first invalid one-to-one foreign key relationship

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Mapping foreign key to non primary surrogate key column in EF code first

I believe the best way to accomplish it is to perform it in EF code first, using either attributes or fluent api:...mapping of a foreign key to a non-primary key in Entity Framework 6.1.3...Is it feasible to convert an Entity Framework 5.0 composite foreign key to a non-primary key?...First mapping in Entity Framework Code without a foreign key...H...

One to One Relationship with Different Primary Key in EF 6.1 Code First

one-to-one... a connection with an explicit FK attribute (such as your...PayGroup.SupervisorId... () is not accepted....Take that property out of the model, then:...public class PayGroup { public int Id { get; set; } public virtual Employee Supervisor { get; set; } } ...and use the following fluent mapping:...modelBuilder.Entity<PayGroup>()...

Many-to-many relationship in Entity Framework Core when one entity has composite primary key

Comparable to adding a single column of FK is adding composite FK....The PK column(s) of the referenced object should be added first:...public class InvoiceLineProductCode { public Guid InvoiceLineId { get; set; } public InvoiceLine InvoiceLine { get; set; } public string ProductCodeCategory { get; set; } // <-- public string Produc...

2 Foreign Keys as Primary Key using EF Core 2.0 Code First

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EF Core Code-First Migration Changing Primary Key from Int to Long Failed

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